Step for boat trailer



FIG. 1 is an isometric view showing the step for boat trailer of this design, the broken lines showing of a boat and trailer are for illustrative purposes only, and form no part of the claimed design;

FIG. 2 is a top plan view of the step for boat trailer;

FIG. 3 is a bottom view thereof;

FIG. 4 is a right side view, the left side view being a mirror image thereof;

FIG. 5 is an exploded isometric view thereof;

FIG. 6 is a front view thereof; and,

FIG. 7 is a rear view thereof. 

The ornamental design for a step for boat trailer, as shown and described. 